Next Article in Journal
The 2018 Conference of the International Sports Engineering Association
Previous Article in Journal
Evaluation of Silicon Nanonet Field Effect Transistor as Photodiodes
Open AccessProceedings

Flow Visualisation around Spinning and Non-Spinning Soccer Balls Using the Lattice Boltzmann Method

1
Faculty of Health and Sports Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba City, Ibaraki 305-8574, Japan
2
Doctoral Program of Coaching Science, University of Tsukuba, Tennodai 1-1-1, Tsukuba City, Ibaraki 305-8574, Japan
3
Exa Japan Inc., Takashima 1-1-2, Nishi-ku, Yokohama City, Kanagawa 220-0011, Japan
4
School of Biomedicine, Far Eastern Federal University, 8 Sukhanova St., Vladivostok 690090, Russia
*
Author to whom correspondence should be addressed.
Presented at the 12th Conference of the International Sports Engineering Association, Brisbane, Queensland, Australia, 26–29 March 2018.
Proceedings 2018, 2(6), 237; https://doi.org/10.3390/proceedings2060237
Published: 12 February 2018
(This article belongs to the Proceedings of The Conference of the International Sports Engineering Association)
The drag and lift of footballs have been mainly measured by wind tunnel tests. In the present study, computational fluid dynamics (CFD) and the lattice Boltzmann method were used to visualise the wakes of spinning and non-spinning footballs and analyse the dynamics of the observed vortex structures. The dominant vortex structures in the wakes of the footballs were determined to be large-scale counter-rotating vortex pairs. The fluctuation of the vortex pair for the spinning football was also estimated to be smaller and more stable than that for the non-spinning football. Although the presence of an unstable, large-scale counter-rotating vortex pair in the wake of a non-spinning ball has been previously observed in wind tunnel tests, the present study particularly found that the dominant vortex structure of a spinning ball was a stable, large-scale counter-rotating vortex pair.
Keywords: flow visualisation; spinning ball; lattice Boltzmann method flow visualisation; spinning ball; lattice Boltzmann method
MDPI and ACS Style

Asai, T.; Hong, S.; Kimachi, K.; Abe, K.; Kai, H.; Nakamura, A. Flow Visualisation around Spinning and Non-Spinning Soccer Balls Using the Lattice Boltzmann Method. Proceedings 2018, 2, 237.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop